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A screen shot of the game created using Unity 3D Engine for PC.
As you can see in the screen shot that the graphics are realistic. See how the shadow
of tree is accordingly to the sun light and the rest of graphics are also giving it a
realistic view. You also play these type of games now a days in your PC’s. Ever
wonder how they are created? Well now you can do it using Unity Engine.
Introduction
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The extension of a unity file is .unity. You can make games on unity for different
platforms that include Android and iOS.
• This screen shot is showing the
platforms on which you can export
your .unity file.
• So now you see the unity is a huge
tool if you are interested in game
development.
• However, in these slides we will only
cover Unity for PC games.
• Unity is a freeware software. Bur it is
now freeware if you want to use it for
commercial purpose. (Selling your
games in market)
Introduction
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Unity is a multi-platform, integrated IDE for scripting
games, and working with 3D virtual worlds Including:
• Game engine
3D objects / lighting / physics / animation / scripting
• Accompanying script editor
MonoDevelop (win/mac) << RECOMMENDED TO USE
Can also use Visual Studio (Windows)
• 3D terrain editor
• 3D object animation manager
• GUI system
• Executable exporter many platforms:
Native application / web player / iPhone / Android / Wii
Introduction
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System Requirements
Windows: XP SP2 or later;
Mac OS X: Intel CPU & "Snow Leopard" 10.6 or later.
Note that Unity was not tested on server versions of Windows and OS X.
Graphics card with DirectX 9 level (shader model 2.0) capabilities. Any card made since
2004 should work.
Using Occlusion Culling requires GPU (Graphics Processing Unit) with Occlusion Query
support (some Intel GPUs do not support that).
Installation
Installing Unity 3D is simple.
• Download the latest Unity distribution from http://unity3d.com/unity/download/
• Run the installer with default settings.
• Run Unity for the first time. It may open the demo project, or it will ask you to create a
project. Open the demo or create a new project without changing any settings.
• Follow the instructions to register online, fill out your email address and just use the
free/indie license.
• Go to File > Open Project
• When your project will be loaded, it will open in unity. More on next slide
Installing
8. 1 – Scene
Scene is same as Hierarchy(2) = same, just diff. views
Editable (design-time) 3D game objects in the current scene
2 – Hierarchy
Text list of game objects and sub-objects in the current scene
3 – Inspector
Properties for currently selected
4 – Game
Preview how game will look when executing
5 – Project
Contents of Project ‘assets’ folder (i.e. files in that folder)
– library of scripts, digital media files, and scenes
ibjects.comUnity Basics
9. ibjects.comUnity Basics
This is the top most bar below Menu Bar in Unity Main Interface Window.
Click-drag to drag the camera around
Hold Alt and click-drag to orbit the camera around the current pivot point.
Hold Control and click-drag to zoom the camera.
Above the Inspector panel, you'll see the Layers and Layout dropdowns. Game Objects can
be grouped into layers, much like in Photoshop or Flash. Unity stores a few commonly used
layouts in the Layout dropdown. You can also save and load your own custom layouts.
These three buttons help you test your game and control playback. As you've seen, the Play
button starts and stops your game. The Pause button works as expected—it pauses your
game so that you can make changes to it on the fly. The third button is a Step-Through
control; use it to advance frame-by-frame through your game so that you can more tightly
control what's going on.
10. ibjects.comUnity Basics
The Scene window is where you can position your Game Objects and move things
around. This window has various controls to change its level of detail. Use these
controls to toggle lighing on and off, and to display the window contents with textures,
wireframes, or a combination of both. You can use the colorful gizmo in the top-right
corner to constrain the window to the X, Y, and Z axes to view the top and sides of your
scene. Click on the white box in the middle to return to perspective view. This is what
the Scene window looks like when you start a new project or create a new Scene.
You can think of scenes as levels or stages in your
game.
A unity “scene” is essentially a “level” or “screen”
Typical game
Welcome / main menu screen
Buttons: play game / see high scores / read
instructions / change input settings
Level 1 / Level complete / Level 2 etc…
Game Over / Enter details for new High Score …
All the above would be separate “scenes” in unity
Some scenes may be entirely based around the Unity
GUI scripts / components – i.e. be text / buttons on
screen
11. ibjects.comUnity Basics
The Game window shows you what your players will see. When you click on the Play
button to test your game (as you just did with the Island Demo), the results of your
efforts play out in this window. Toggle the Maximize on Play button to test your game
in full-screen mode.
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The Hierarchy panel lists all of the Game Objects in your
Scene. Game Objects - cameras, lights, models, and
prefabs—are the things that make up your game.
They can be "tangible" things like the birds and the bridge in
the Island Demo. They can also include intangible things,
which only you as the game developer get to see and play
with, such as the cameras, the lights, and colliders, which are
special invisible shapes that tell the game engine when two
Game Objects are touching.
So, Game Objects can include touchy-feely "physical" objects
like birds and bridges, as well as behind-the-scenes
intangible things like lights, cameras, and actions (scripts).
Click on a Game Object in the Hierarchy panel, and then
hover your mouse over the Scene window. Press the F key on
your keyboard, and the Scene window will automatically pan
and zoom directly to that object. Alternatively, you can go to
Edit | Frame Selected, which can be more reliable than using
the keyboard shortcut. (I like to think of the F as standing for
Focus to help me remember what this shortcut does).
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It lists all of the elements that you'll use to create Game
Objects in your project.
The Project panel contains many of the elements, or
ingredients, that go into making our Game Objects.
The Project panel displays the contents of a special folder
called Assets. Unity automatically creates the Assets folder
for you when you create a new project. If you drag a
compatible file, like a 3D model, a sound effect, or an image
into the Project panel, Unity copies it to the Assets folder
behind the scenes, and displays it in the Project panel.
Don't mess with the Assets folder!
Unity stores metadata about the folder, and by moving stuff
around or deleting things through your operating system,
you may break your project. If you need to make changes,
make them right inside Unity in the Project panel.
14. ibjects.comUnity Basics
The Inspector is a context-sensitive panel, which means that
it changes depending on what you select elsewhere in Unity.
This is where you can adjust the position, rotation, and scale
of Game Objects listed in the Hierarchy panel.
The Inspector can also display controls to configure
components that add functionality to Game Objects.
Between the three main panels in Unity (Hierarchy, Project,
and Inspector), the Inspector is where you'll likely spend
most of your time because that's where you'll be tweaking
and fiddling with every aspect of the elements that comprise
your game projects.
15. ibjects.comScripting
• Unity implements a MONO compiler
• Scripts can be written in
JavaScript
Note – most introductory tutorials are written in Javascript – for those learning
programming its fine
C#
Very similar to Java, Unity can be integrated with the Microsoft Visual Studio editor, to
get full benefits of code completion, source version control etc.
Serious developers work in C#
• In Unity, select from the menu Assets->Sync VisualStudio Project
• Find the newly created .sln file in your Unity project (one folder up from your Assets folder)
• Open that file with Visual Studio Express.
• In Unity, go to Edit->Preferences, and make sure that Visual Studio is selected as your preferred
external editor.
• Doubleclick a C# file in your project. Visual Studio should automatically open that file for you.
• You can edit the file, save, and switch back to Unity.
• You can now edit all your script files, and switch back to Unity to use them.
16. ibjects.comGame Objects & Prefabs
• Everything in a scene is either a Game Object or a component inside a Game Object
• Every Game Object has at least 1 COMPONENT
Its TRANSFORM – an object’s position, scale, rotation
Other components depend on object type (audio, mesh, material, script etc.)
• Game objects can be in a HIERARHCY – so an object can be a sub-object of another object
E.g. an “arm” object can be a sub-object of a “body” object etc.
Since object-oriented (although this is partially hidden when scripting in JavaScript)
instances can be INSTANTIATED at run time.
Unity uses the term PREFAB for a pre-fabricated object template (i.e. a class combining 3D
objects and scripts)
At DESIGN TIME (in editor) a prefab can be dragged from Project window into the Scene
window and added the scene’s hierarchy of game objects. The object can then be edited
(i.e. customised from the prefab default settings) if desired
At RUN TIME a script can cause a new object instance to be created (instantiated) at a given
location / with a given transform set of properties
17. ibjects.comAsset
Unity will automatically detect files as they are added to your Project folder's Assets folder.
When you put any asset into your Assets folder, you will see the asset appear in your
Project View.
• Asset Store
Unity's Asset Store is home to a growing library of free and commercial assets created both by
Unity Technologies and also members of the community.
A wide variety of assets is available, covering everything from textures, models and
animations to whole project examples, tutorials and Editor extensions. The assets are accessed
from a simple interface built into the Unity Editor and are downloaded and imported directly
into your project.
You can open the Asset Store window by selecting Window->AssetStore from the
main menu. On your first visit, you will be prompted to create a free user account which you
will use to access the Store subsequently.
• Location of Downloaded Asset Files
You will rarely, if ever, need to access the files downloaded from the Asset Store directly.
However, if you do need to, you can find them in
~/Library/Unity/Asset Store ...on the Mac and in
C:UsersaccountNameAppDataRoamingUnityAsset Store ...on Windows. These folders
contain subfolders that correspond to particular Asset Store vendors - the actual asset files are
contained in the appropriate subfolder
18. ibjects.comBuild
From the menu bar select File -> Build Settings
Select Scenes to Build
Select Platform
Click Build And Run
